Fontana TWINLIGHT fraxel compared to Fraxel Dual 1550/1927. Which is best for a fresher brighter complexion?

I am 65 with crow's feet, upper lip lines and diffuse redness. I am really confused by the 'expert' advice I am getting. What is difference between Dual Fraxel 1550/1927 and Fontana TWINLIGHT? What do they do differently? Is it the depth of skin penetration? What is the most appropriate fraxel to address the issues that concern me? And of course as you always stress, whatever my decision it will be based on the input of highly skilled and credentialed experts.

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